Based on this selection, which two of the following show arguments in support of active SETI?
A Space beings may have advanced technologies that could solve human problems.
B Humans are already transmitting radio signals that can be picked up in space.
C Other planets in the universe are unlikely to be able to support intelligent beings.
D Other space civilizations would most likely not be interested in humans.
E History shows that humans would be peaceful if alien civilizations were discovered.